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Browse and contribute to the Trefle botanical data.
Penstemon heterodoxus var. cephalophorus
Penstemon heterodoxus var. shastensis
Penstemon fremontii var. glabrescens
Penstemon heterodoxus var. heterodoxus
Senna angulata var. miscadena
Penstemon fruticosus var. scouleri
Penstemon fruticosus var. serratus
Penstemon humilis var. humilis
Penstemon lentus var. albiflorus
Penstemon rydbergii var. oreocharis
Penstemon humilis var. brevifolius
Penstemon humilis var. obtusifolius
Penstemon × jonesii
Penstemon lentus var. lentus
Penstemon gairdneri var. gairdneri
Senna angustisiliqua var. angustisiliqua
Penstemon gracilentus
Slender penstemon
Penstemon heterodoxus
Sierran penstemon
Penstemon gairdneri var. oreganus
Penstemon laricifolius var. exilifolius
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